The vulnerability of the PowerDNS Recursor DNS server stems from the practice of marking authoritative servers as unavailable, allowing attackers to trigger a service failure.

The vulnerability of the PowerDNS Recursor DNS server is related to the marking of authoritative servers as unavailable. Exploiting this vulnerability could allow a malicious actor to cause service failures...

SUSE CVE-2023-26437

Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3...

Caudium 1.x - Remote Denial of Service

source: https://www.securityfocus.com/bid/11567/info Caudium is reported prone to a remote denial of service vulnerability. Remote attackers may exploit this vulnerability to crash affected Web servers, denying service to legitimate users. Versions of Caudium prior to 1.4.4 RC2 are reported...